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                                  [5月15日] 南方科技大學李芯芯博士學術報告
                                  来源: 澳门赌博网    編輯:劉建華    時間:2019-05-14    
                                   

                                  地球系統科學論壇第664期

                                  澳门赌博网和生環國重羅根明副教授邀請,南方科技大學李芯芯博士來校交流並做報告 。

                                  報告題目:Organic carbon biogeochemistry from estuaries to trenches

                                  報告人:李芯芯 博士

                                  報告時間:2019年5月15日(星期三)下午2:30-4:00

                                  報告地點:地質齋(主樓308)

                                  報告人簡介:李芯芯 ,博士 ,現爲南方科技大學海洋科學與工程系助理教授  ,博士生導師。2013年獲得德州農工大學(Texas A&M University)化學海洋學博士學位 。主要利用穩定及放射性碳同位素、生物標誌物(例如木質素)、微生物種羣動態和代謝過程等方法研究從河口向海溝各海洋生態系統中有機碳的生物有機地球化學循環過程 ,及其與海洋富營養化、缺氧效應和全球氣候變化的相互關係。在海洋學科知名學術期刊Marine Chemistry、JGR-Biogeosciences、Geochimica et Cosmochimica Acta發表12篇論文和一篇國際海水營養鹽標準報告(共76名作者)。

                                  報告簡介:Organic carbon biogeochemistry is one of the most important scientific questions in oceanography considering ocean as one of the biggest carbon reservoirs in the earth planet. Two study cases from estuaries to trenches were presented in this talk. 1) Elemental, stable C, N isotope, radiocarbon isotope (Δ14C), black carbon (BC) analysis, and chemical biomarkers were utilized to study the effect of the sources, short-term events and physical processes on the composition, abundance, and age of the surface sedimentary OC in East China Sea (ECS) from 2009 to 2010. 2) Pelagic OC cycling in Trench is unique to study OC budget in complete ocean layers from epipelagic all the way to hadal pelagic environment. We proposed to apply organic geochemical analysis, in combining with measurement on microbial chemoautotrophic carbon fixation and respiration rate, we aim to first quantitatively analyze the carbon input from net microbial carbon fixation processes to trench sedimentary OC pool.

                                   

                                   

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                                  2019年5月